Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Fixes clang-usan runtime error "null pointer passed as argument 2,
which is declared to never be null" while streamcopying.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

According to avcodec.h, avcodec_decode_video2 should return the number of
bytes used if a frame was decoded.

The current implementation returns size - used size of all the subframes.
This fixes the VLC's bug https://trac.videolan.org/vlc/ticket/16836.

The superframe is always fully consumed.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

With compilers that do not support proper dead code elimination, like
Sun C 5.12, linking fails due to missing references to unavailable,
but also unused, symbols.

Bug-Id: 895

Generate the files in a single postprocessing step w/o intermediate files.

Split version files into one line per symbol/directive to allow compatibility
with the Solaris linker without preprocessing and eliminate $ from version file
templates to simplify the postprocessing shell command.

These warnings conflict with system macros on Solaris, producing
truckloads of warnings about macro redefinition.

CC: libav-stable@libav.org
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Experimental; requires Skylake and VAAPI 0.39.1 (not yet released).
Also increases the allowed range of the quality option - in low-power
mode, the Intel driver supports levels 1-8 (and 0 meaning default).

Non-reference frames (nal_ref_idc == 0) should be discardable, so
frame_num does not advance after them.  Before this change, a stream
containing unreferenced B-frames would be rejected by the reference
decoder.

This prevents attempts to use unsupported modes, such as low-power
H.264 mode on non-Skylake targets.  Also fixes a crash on invalid
configuration, when trying to destroy an invalid VA config/context.

This is a video test and there are no audio packets in the sample
anyway.

The current code modifies the user-supplied string, which is shared for
the whole output file. So a bitstream filter specification applied to
multiple streams would not work correctly.

avcodec_copy_context() didn't handle hw_frames_ctx references correctly
which could cause crashes.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

This is only used for logging a human readable codec name for
debugging.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

We cannot deprecate it until the new parser API is in place, because of
the way libavformat works. But the majority of the users can already
simply replace it with avcodec_free_context(), which will simplify the
transition once it is finally deprecated.

This function is supposed to "reset" a codec context to a clean state so
that it can be opened again. The only reason it exists is to allow using
AVStream.codec as a decoding context (after it was already
opened/used/closed by avformat_find_stream_info()). Since that behaviour
is now deprecated, there is no reason for this function to exist
anymore.

Since AVCodecContext contains a lot of complex state, copying a codec
context is not a well-defined operation. The purpose for which it is
typically used (which is well-defined) is copying the stream parameters
from one codec context to another. That is now possible with through the
AVCodecParameters API. Therefore, there is no reason for
avcodec_copy_context() to exist.

Describe the new AVCodecParameters API.

Initialize the bit buffer with the correct size (amount of bits that will
be read) instead of relying on the bitstream reader overreading the
correct values.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

It will not be provided by the new bit reader anyway.